Knee brace



FIG. 1 is a perspective view of a knee brace showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines shown in the figures are included for the purpose of illustrating portions of the knee brace and form no part of the claimed design. 

CLAIM The ornamental design for a knee brace, as shown and described. 